Rail Pad

Rail pads are elastic polyurethane mats which are interposed between steel rails and tie sleepers to protect the sleeper top from wearing and impacting. The starting stiffness of a rail pad is designed to not be high so that their relative deformation under the spring clip toe loads is greatly substantial. In this way, it can guarantees the rail pad maintaining in close contact with the rail despite of any vertical movements of the latter. In addition, the reason why rail pads made up of rubber or plastic is to dampen the shocks of vibration of a passing train.

A rail pad is essential in reducing shock and vibration in a rail system. The pad laid under the rail to ensure:

Load distribution over a larger surface

Elimination of load concentration and the resultant fatigue stresses

Centering of loads on the supporting element

Absorption of uneven contact surfaces between rail and support

Reduction of noise and vibration

Sealing between the bottom of the rail and the top of the support

Reduction of wear of the rail and its support

We have developed a range of high-performance elastic rail pads for stiffness requirements and various application areas-from trams through standard gauge railways to heavy haul lines, especially those for E-type rail fastening systems and SKL type rail fastening systems with material of HDPE/EVA/Rubber, with following properties respectively.

HDPE

Technical Parameter

Unit

Technical Requirement

Value

Density

g/cm3

0.95-0.98

0.95

Tensile Strength

Mpa

≥19

19

Elongation

%

>80

150

Melting Point

℃

170-190

190

Insulation Resistance

Ω

≥1×1010

3.5 ×1010

Hardness

A

≥98

98(A)

EVA: Polyethylene 80%, Vinyl Acetate 20%.

Technical Parameter

Unit

Technical Requirement

Value

Density

g/cm3

0.95-0.98

0.95

Tensile Strength

Mpa

≥15

16

Elongation

%

>500

550

Melting Point

℃

170-190

170

Insulation Resistance

Ω

≥1×1010

5.0 ×1010

Hardness

A

≥90

92(A)

Rubber

Technical Parameter

Unit

Value

Stiffness

KN

90-130

Hardness Shore A

℃

72-80 degree

Electronic Resistance

Ω

≥ 106

Tensile Strength before Aging

Mpa

≥12.5

Elongation before Aging

%

≥250

Main classifications of rail pads

Rail pads for E-type rail fastening systems

Rail rubber pads used for E-type rail fastening systems are with the similar functions of the rail insulators to insulate the rail above it from the tie sleepers lied below it, for effective protection against vibration and structure-borne noise as well. The rail pad works together with e-clips, rail insulators/insulated gauge blocks and rail shoulders/embedded parts to form a whole set of E-type rail fastening system.

Rail pads for SKL rail fastening systems

A rail pad in a SKL rail fastening system is a small but crucial fastener part, working together with SKL clips, screw spikes, plastic dowels, guide plates and so on. The elastic rail pads we produce possess a defined stiffness and demonstrably increase the elasticity of the track superstructure. With a higher level of elasticity, it contributes towards quiet running of the rolling stock, to meet today’s acoustic requirements on railway lines.

Rubber rail pads for concrete sleepers

Material:

rubber

Standard:

TB/T2626-95

Application:

43kg/m ,50kg/m, 60kg/m, 75kg/m rail

Models:

43-7-7, 43-10-7, 50-7-9, 50-10-9, 60-10-17, 60-12-17

Operation temperature:

-50~70 degrees

Certificate:

ISO9001:2008

Notes:

Should be stored in clean, ventilated place. Don’t put under direct sunlight, and keep away from heat sources and chemical reagents. Don’t touch oil, organic solvent and other chemicals.

High-elastic grooved EVA/HDPE/rubber rail pads

Our EVA/HDPE/rubber rail pads are with high elasticity, applying to types for rails such as rail UIC54, UIC60, BS80lbs,BS100lbs, and sizes as ordered. The pads can be customized with or without grooves, in various possible designs, depending on customers’ requirements.